<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style type="text/css">
			*{
				margin: 0;
				padding: 0;
			}
			
			html,body{
				width: 100%;
				height: 100%;
			}
			
			div.b1{
				display: flex;
				justify-content: center;
			}
			
			div.boxleft{
				padding-right: 10px;
			}
			div.boxcenter{
				padding: 10px 10px;
			}
			div.boxright{
				padding-left: 10px;
			}
		</style>
	</head>
	<body>
		<div class="b1">
			<div class="boxleft" style="background-color: aqua;"></div>
			<div class="boxleft" style="background-color: blue;"></div>
			<div class="boxleft" style="background-color: purple;"></div>
			<div class="boxleft" style="background-color: black;"></div>
		</div>
	</body>
</html>
